Re: [Emc-users] 2.7's new Trajectory planner.

Thanks Robert, and thanks Sam et al for testing I'll be moving soon and hope to get re-setup and try some of this TomP tjtr33 On 08/13/2015 07:54 AM, sam sokolik wrote: As 2.7 gets closer to release I wanted to make some comments on where the new TP is at. I have been running it through its

Re: [Emc-users] Wire EDM

Andythose machine are pretty cheap moly wire and yes, they dont back up even with their own control. notice the un-constant feed. thats the edm-servo loop racing to get back to the correct gap position. This is an example of catch-up edm. Instead of being in the right place, it cuts slower,

Re: [Emc-users] Mesa Ethernet products

wow, lotsa cheap io there for laptops with reasonable latency. unforch i got rid of thinkpad with 18uS latency heck it even had lpt. somebody grab it at goodwill elgin il :) sounds like a simplified wiring setup for step systems to me thx PCW et al at Mesa! TomP tjtr33 On Thu, Oct 22, 2015 at

Re: [Emc-users] off topic free mechanical movement software simulation

rich, thats a review that makes me wanna look at it (old mold maker with all fingers and eyes ;) tomp tjtr33 -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net

Re: [Emc-users] could Linux cnc control of unconventional mill design like this and general thoughts and comments.

the industry sales pitch for the stewart platforms and delta machines is that they are dynamically stiff. that the servos force the frame into a rigid state. I'm not one to believe anything a salesman ( pirata ) says, but the early work at NIST says thats what happens i'm talking commercial

Re: [Emc-users] could Linux cnc control of unconventional ... hydraulic

moog or pegasus. brands, those are the big names. they were used to move really heavy cast iron slides, often dovetail. messy ( plan on leaks and kitty litter ) the hydraulic supply tops up the volume from a reservoir that you keep full these are really really beefy systems. the internal of the

Re: [Emc-users] Looping and axis

hmm interesting chicken and egg problem the pre-interpretation done by linuxcnc has loads of benefits but it can have problems with undefined things ( where to trip on a touchprobe, where it will be when done- but in infinite loop so it never finished that calculation) better heads than mine

Re: [Emc-users] Looping and axis

I believe the problem is not in a logical exit. Rather in the loading which interprets the infinite loop. The interp does not know you will set some exit condition. So it happily iterates till doomsday. And you is hung up my man! Help I am caught in a loop :-)

Re: [Emc-users] could Linux cnc control of unconventional mill design like this and general thoughts and comments.

well it is like the rostock but has extra constraint in the extra 3 tracks and arms maybe this is to increase the rigidity. the standard rostock looks and feels really wiggly to anyone used to tool room machines. the drawings _suggest_ use of iron C channel, so I _guess_ rigidity is sought

Re: [Emc-users] could Linux cnc control of unconventional mill design like this and general thoughts and comments.

this describes the stiffness and joint aspects better https://www.youtube.com/watch?v=SSSvKt92tnA no ball joints! a knuckle/nutating head on end of 'inverted rostock' -- ___

Re: [Emc-users] Looping and axis

my bad, I thought Linuxcnc required preparsing the entire program, almost simulating the entire motion to know bounds checks, and to respect velocity and acceleration constraints, and the blending was calculated... all this before attempting any motion. I thought that nothing else would happen

Re: [Emc-users] AC Servo Motors

On 10/07/2015 05:35 PM, andy pugh wrote: > On 7 October 2015 at 22:22, Marshland Engineering > wrote: >> Never having used them before what are the downsides for CNC control ? > > You will never have to replace the brushes. If you have the matching > drives then I

Re: [Emc-users] AC Servo Motors

On 10/07/2015 07:34 PM, andy pugh wrote: > On 7 October 2015 at 23:43, TJoseph Powderly <tjt...@gmail.com> wrote: >> DC motors go much slower without cogging. Important for edm, polishing >> and grinding, not so much for other disciplines. > > Even with sinusoidal commu

Re: [Emc-users] AC Servo Motors

On 10/08/2015 03:18 AM, Marshland Engineering wrote: > Apparently DC Brushless cog but not AC ? > Anyway I'm about to order a 6N.m 1.8KW AC motor and drive for $340. It's > worth a try. > no, I found Ac drives cogging, and the _brushed_ dc drives did not > Brushes ?? My South Western Industries

Re: [Emc-users] AC Servo Motors

Teco was next door in Taichung Taiwan. We were in Dali City. So, Teco set up thier drives and motors. We set up the Yask & Panasonics cuz we use them in the Mills made there. You may be right tho. We may have a difference of scale involved here. I began with saying "<1mm/min". Your Mileage

Re: [Emc-users] Screen ratio Q

Jack xvidtune can implement custom video modelines I used to have to make a new one with every linux release and every new monitor not for the faint of heart you can find it in the package 'x11-xserver-utils' HTH TomP tjtr33 On 07/08/2015 09:07 PM, Gene Heskett wrote: On Wednesday 08 July 2015

Re: [Emc-users] computing max acceleration for an actuator

Jerry I didnt answer your question. to measure acceleration there's an industry standard 'step' test. The 'step' is to apply the voltage required to achieve max velocity. This voltage **instantly** rises from 0 to the value needed for max velocity. Thats where the name 'step' comes from, Its a

Re: [Emc-users] computing max acceleration for an actuator

Jerry please keep us informed of your project. I have a SMAC ( not SMC) thats rated 5G's but only 15mm stroke and 1um renishaw scale ( also ebay find) It uses a voice coil to get the speed and accel, no screw involved. The acceleration we're playing with makes control difficult. the counts are

Re: [Emc-users] This ones for PCW

On 09/11/2015 03:59 AM, andy pugh wrote: > On 11 September 2015 at 05:33, Gene Heskett wrote: >> One hopefully last question then Andy, can hal or axis do the math such >> that there is one master place to specify this "scale", and set the >> pid's maxoutput to 0.98 * scale? >

Re: [Emc-users] This ones for PCW

On 09/11/2015 10:50 PM, Gene Heskett wrote: > > I was feathered, sorta resembling a chicken, so I called in a scale > module, which once configured worked really well. > > But in the 2.8.0-pre's I have a bitch, a loud one. The halmeter is shown > forground for as long as it exists, and that is

Re: [Emc-users] Amazon playing tricks?

On 10/03/2015 12:15 PM, Jon Elson wrote: > On 10/03/2015 11:00 AM, Gene Heskett wrote: >> So I go to fleabay, and their search engine sends me 4 damned pages of 12 >> volt supplies for a search term of "24 volt switching power supply". >> All at 2-5x the amazon prices. > For small power supplies,

Re: [Emc-users] CNC mill + plasma cutter = CNC plasma cutter.

very few people remember maytag being a stationary power source like a kick start moped engine. used to run washers and refrigerators etc. thx Gene tomp tjtr33 On 09/20/2015 03:51 PM, Gene Heskett wrote: > On Sunday 20 September 2015 13:23:31 N. Christopher Perry wrote: > >> I wouldn't call that

Re: [Emc-users] multiple gcode streams in parallel

It doesnt sound like the task is well defined here on mail list. If the 2 independent(?) systems do not require interpolation _between_ them, then M65 thru M66 could provide the 'handshaking'. Each would have a 'busy' and a 'fin' signal. This is extremely sequential. Else please explain more,

Re: [Emc-users] Off topic. Open CV and Newts

On 09/22/2015 09:12 AM, andy pugh wrote: > A friend is a professional newt-spotter. He is an ecologist who has a > lot of dealings with the Great Crested Newt, a protected species. > Part of his work involves identifying individual newts by their > distinctive orange and black belly markings. He

Re: [Emc-users] Learning LinuxCNC Youtube Channel

Thx Jim, watching now TomP tjtr33 On 09/18/2015 07:41 AM, Jim Craig wrote: > I decided that I would start a Youtube channel that is all about > LinuxCNC. ... -- ___ Emc-users

Re: [Emc-users] mb2hal and floating point conversions

Thx Jeff I also use a Labjack with Hal. This comp is much cleaner. TomP tjtr33 -- Go from Idea to Many App Stores Faster with Intel(R) XDK Give your users amazing mobile app experiences with Intel(R) XDK. Use one

Re: [Emc-users] How to make a frame square?

reality check: aluminum extrusion warrants square as a carpenter thinks square is maybe square as a cabinet maker works making it 'more' square surpasses its straightness and flatness. (qualities any machine wright will insist come first) using a ceramic or granite square or laser is like doing

Re: [Emc-users] Grounding Issues

if you can get a scope (2 trace) and _SEE_ the noise from your machine ground to a good ground, then you can see when you make a difference. a good ground can be tested with a megger ( hard to find) a good ground can be a copper rod driven 10 ft into good earth so find the best you can and look

Re: [Emc-users] seasons greetings

Merry Christmas to all, and special thanks for all the work. tomp tjtr33 On 12/25/2015 09:10 AM, Robert Ellenberg wrote: > Merry Christmas all! > > https://youtu.be/qEvQLxwp3-A > --

Re: [Emc-users] Very strange behaviour

G0 rate faster than G1/2/3 which uses F ? tomp/tjtr33 -- Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web

Re: [Emc-users] Coffecup EDM

es of one spark the magnetic phase, the thermal phase, hydraulic phase,,, quite a good explanation without needing words. sorry i cant find a web copy right now nope 1/2 hr and no originals found, sorry oh this is pretty good http://edmtechman.com/about.cfm?pg=2=2#a1 2016 07:19:59 +0700 TJosep

Re: [Emc-users] Coffecup EDM

hahaha thats great Nicklas. the action at the gear tells me its real edm too! thanks tomp On 06/19/16 04:08, Nicklas Karlsson wrote: > I have real machine but coffecup is more handy during development and at last > I got my coffecup EDM up and running. > > https://youtu.be/fBOl_pCkDFA > > >

Re: [Emc-users] Coffecup EDM

Nicklas hello' could you do another screenshot, but add the oscillator ( on & off command signal )? it would be easier to interpret thanks tomp tjtr33 On 06/20/16 00:07, Nicklas Karlsson wrote: >> On 06/19/16 17:55, Nicklas Karlsson wrote: >>> I tried to tune parameters manually but most of the

Re: [Emc-users] Coffecup EDM

Nicklas regarding 'start of period to count' there is a concept in EDM that was branded ISOpuls and more genericly iso-energetic it is a method concerning WHEN to begin the on-time count. to make each spark have same energy the duration of current flow must be equal so a circuit to detect the

Re: [Emc-users] Mesa Reseller in America

very nice John. the tree is gonna be loved ( complete with caveat ) will you ship to Thailand? thx TomP On 02/07/2016 06:54 AM, John Thornton wrote: > mesaus.com > > JT > > On 2/6/2016 3:08 PM, Jeremy Jones wrote: >> Congratulations! Is there a web address? >> >> On Sat, Feb 6, 2016 at 3:17 PM,

Re: [Emc-users] MPG Handwheel for use with 7i73

fwiw you could hre some needy nerd to do it for you then you'd have a needy nerd resource for next problem tomp ( im in thailand where everybody works even if its really dumb and redundant like ticket takers ticket checkers ticket passer-backers and secondary ticket checkers :-) On 02/07/2016

Re: [Emc-users] CAD/CAM novelties

Gene both open here fine using iceweasel the pdf is a paper from UniChicago about the program the webpage is a live online demo of usage my install is straight up unhacked linuxcnc iso, maybe 5 month old no need for OP to change his site my2c TomP On 02/12/2016 10:18 AM, Gene Heskett wrote: > On

Re: [Emc-users] CAD/CAM novelties

Gene On 02/12/2016 11:48 AM, Gene Heskett wrote: > On Thursday 11 February 2016 21:56:19 TJoseph Powderly wrote: > >> Gene both open here fine using iceweasel > What version TomP? Iceweasel/firefox V44.0 here. dunno obfuscated by hiding under system variable 'webbrowser' and

Re: [Emc-users] CAD/CAM novelties

and takes the onus off the archiver everbody happy ! tomp On 02/12/2016 11:48 AM, Gene Heskett wrote: > On Thursday 11 February 2016 21:56:19 TJoseph Powderly wrote: > >> Gene both open here fine using iceweasel > What version TomP? Iceweasel/firefox V44.0 here. > > Thanks. &g

Re: [Emc-users] Software that can mirror image G-code?

hmm i dunno how cutter comp will mirror parts i can be wrong ( again) but a historical note: old AGIE 2D wire edm had front panel switches to 'flip X ' AND to 'flip Y' it was to make setup easier. it really just was a few logic gates in the stepper signals so the idea might be of use, a hardware

Re: [Emc-users] Rigid Tapping in U,V,W

Thanks Todd before i dig into your code, i read the thread and if i understand correctly, then i can rephrase what you did ( my standard test for whether i understand ;-) i think you commanded W and added the delta to the W while the custom M code was in effect. true? i did similar for sink edm

Re: [Emc-users] Creating G-code?

cpp, the c preprocessor can do the macro expansion does not have to get C handed to it also commonly available on linux distros tomp On 02/01/2016 12:27 PM, Chris Albertson wrote: > I was thinking about using "m4". It is a macro processor that is already > on every Linux/Unix system and I think

Re: [Emc-users] Digikey for me [Was: Well, thats the end of aliexpress.com for me]

OZ still got supplier 'Dick Smith' inventor of the co-tanga antenna? ( his joke ads were great, the co-tanga antenna was a bent coat hangar ) tomp On 02/01/2016 03:28 PM, Erik Christiansen wrote: > The ability to order on the internet has wiped out quite a few local > professional parts

Re: [Emc-users] Well, thats the end of aliexpress.com for me

yes the search is great, the delivery is quick & selection very good CAVET make sure you have all the parts ordered then wait a while and see if the list is still complete several times i found one small item missing and ended up paying a second shipping charge hard to do when its a rush fix for

Re: [Emc-users] 7i43 encoder count failures

the error is in the recorded data that is, the data AFTER it was transferred the transferred data might be fine and the error message is based on the stored data the message might imply it is based on the data transferred but it aint, it is on a copy and that copy is in memory, not in a stream

Re: [Emc-users] 7i43 encoder count failures

it is a single bit difference between 0x8000 and 0x can you check your memory? hth tomp On 02/03/2016 02:40 AM, Marius Alksnys wrote: > Today I catched the fault which was causing headache for quite a long > time already. > > There is a machine with one 7i43 P (200k) and one 7i39 and one BLDC

Re: [Emc-users] Well, thats the end of aliexpress.com for me (OT warning)

nicklas hahaha i understand very well but dont be sour all women love you.r money as they say here in thailand ;-) tomp On 02/02/2016 01:16 AM, Nicklas Karlsson wrote: > On Mon, 1 Feb 2016 08:27:42 -0800 > Steve Traugott wrote: > >> Interesting. My wife and

Re: [Emc-users] pyvcp/xml syntax

for the 3 q's basicly you dont you dont you dont pyvcp uses a simplified render-er and 'mini-gl' you can put empty looking things to push what you want into a vertical/horizontal/centered position read the src code i made custom libs to allow more of the common markup attributes it was not

[Emc-users] very low speed motion

i was reading the step/servo thread ... this is related but OT clear me up on in this... about very slow motion with steppers and servos assuming the minimum position change is .001mm ( commanded step or feedback unit so: a single step moves .001" and any feedback has .001 resolution )

Re: [Emc-users] Rigid Tapping in U,V,W

thanks todd i also used the offset component so it sounds familiar the offset component was returned to original position simply by nudging till offset was 0 tomp On 02/14/2016 06:54 AM, Todd Zuercher wrote: > I'm not quite sure I understood your reinterpretation of what I tried to > explain.

Re: [Emc-users] Micro-switch repeatability

Gene an improved home routine would add a solenoid and piping to clean the switches no more "wheres the dang non-osha gun gone today?" tomp On 02/16/2016 10:11 AM, Gene Heskett wrote: I paint brush or air hose the swarf from in front of it before I command a home,

Re: [Emc-users] Micro-switch repeatability

most commercial cncs have encoder home morks ( Z phase) and they have what users often miss-call a 'home' switch its really a 'close to home, slow down you fool' switch so the velocities during the home 'stretch' ( between 'nearhome' and home) are always controlled the distance between those

Re: [Emc-users] Micro-switch repeatability

my-com switches, 1um guaranteed. every good german wedm uses them and high end japanese my-com yes expensive paeng maak! but damn accurate tomp On 02/16/2016 02:53 PM, Nicklas Karlsson wrote: > I heard rumors here a while ago about micro meter accuracy switch but I guess > it might be a

Re: [Emc-users] Micro-switch repeatability

agreed a near home switch and a home switch fanuc called the near hone a 'decel switch' tomp On 02/16/2016 10:42 PM, Kurt M. Sanger wrote: > When we were building high resolution printers we would use an optical > switch looking at a rotary flag in series with a linear switch to define > home.

Re: [Emc-users] Linear / glass Scales

somebody with more time than me (tm) could try the linear resolvers like skunkworks had it looked as if they could be made as pcb's http://www.google.com/patents/US4705971 http://www.analog.com/media/en/technical-documentation/application-notes/394309286AN263.pdf google for inductosyn iirc Jon

Re: [Emc-users] Linear / glass Scales

Hello Nicklas On 02/19/2016 03:23 AM, Nicklas Karlsson wrote: > Do you know accuracy of the linear resolvers? http://www.ruhle.com/linear_transducers.htm states +/-1um, I was surprised it was not better > I guess it would be possible to position an ordinary disc read head quite > accurate.

Re: [Emc-users] Learning LinuxCNC Youtube Channel

jim thanks for the videos i'm eyebrow deep in other things but have them on the todo list tomp On 03/11/2016 03:10 AM, Jim Craig wrote: > On 3/10/2016 9:27 AM, John Alexander Stewart wrote: >> Jim - thanks for progressing with these videos. >> >> I wonder if it might be an idea to get a mic that

Re: [Emc-users] RFID Tag or Barcode into LinuxCNC

interesting idea i played with similar idea on sink edm where each tool barely moved at a single position ( orbiting) i thought "why not program the tool instead of the machine?" put position depth cutting parms on texas instrument tool chip ( like rfid or barcode ) then controller was point to

Re: [Emc-users] Copying G code files from PC to PC

i wonder too i got wifi sd cards from cameras to work for fujix picture xfers this eliminated one nonstandard tiny usb cable (which doesnt fit other tiny nonstandard usb sockets) tomp On 03/25/2016 02:53 AM, Rick Lair wrote: > I don't know, now you have me wondering, > > We do have some WiFi

Re: [Emc-users] Linuxcnc on arm

wow! thx Jeff tomp On 03/25/2016 09:54 AM, Jeff Epler wrote: > I dared myself to fix nml-over-tcp, and got it working this evening. > -- Transform Data into Opportunity. Accelerate data analysis in your applications

Re: [Emc-users] Linuxcnc on arm

555 ( hahaha in Thai ) no! use old hammond organ for that buzzy sound reminds me of herbie hancock 'rockit' https://www.youtube.com/watch?v=GHhD4PD75zY tomp On 03/21/2016 01:50 AM, bari wrote: > It sounds like it's more fun than practical. My Android phone hardly > works as a phone. I can't

Re: [Emc-users] Linuxcnc on arm.contact reliability

i used to use a liquid chemical for hifi snobs called 'tweak' http://www.whatsbestforum.com/showthread.php?1652-Contact-Cleaning-The-Right-Stuff but old dollar bills worked well too due to rag content ( does not apply to new plastic money ) i read once that connectors really only had single

Re: [Emc-users] Q:Using threading tools to do the initial tapering operation.

On 07/29/16 16:07, andy pugh wrote: > On 29 July 2016 at 02:49, Gene Heskett wrote: >> There does appear to be a flat on >> the tip, perhaps a thou wide. > Should there be? > > What exactly, is this tapered thread? is it a pipe thread? maybe for a pipe plug common on molds

Re: [Emc-users] EDM with continuous wire?

Hello Gene Using copper tools to cut steel ( all other variable untouched ) Positive tool is lower wear & slower cut & rougher finish Negative tool is higher wear & faster cut & finer finish hth tomp tjtr33

Re: [Emc-users] EDM with continuous wire?

Gene once again your post title ran me off as i took it to be correct your post is titled 'continuous wire' not disk, hahaha if you wanted continuous wire ( reciprocating versus single direction, using capstan windlass rewinder) then look at https://www.youtube.com/watch?v=qoV8UXtLYmE Andre

Re: [Emc-users] EDM with continuous wire?

dont spin too fast SFM is pretty low ( compared to regular grinding ) if too fast you hear the sparking get weak (try slower to test quick ) the spark can get 'blown out' ( as in candle ) if you move too fast AGie EDM grinders were used to slot sewing machine carbide plates and the wheel was

Re: [Emc-users] EDM with continuous wire?

dontworryaboutit (james caan) everythings relative ;-) 1/32 slot? automatic? sweet. movies at noon? tomp tjtr33 On 07/21/16 11:51, Gene Heskett wrote: > On Wednesday 20 July 2016 22:34:00 TJoseph Powderly wrote: > >> Hello Gene >> Using copper tools to cut steel ( all other variable untou

Re: [Emc-users] EDM with continuous wire?

Gene in this vid https://www.youtube.com/watch?v=ccYE0ICp5F8 he shows a better pyvcp panel ( and shows he's likely using a parport) AND hahaha hes using an old AGie 60L generator for power AND a home-made 'crossbow' wire feed on a stock sinker ( with linuxcnc moving the slides ) got a Polish

Re: [Emc-users] EDM with continuous wire?

pins ) cheap because of tool life and great with cheap labor that can untangle the break and rewind it onto the spool ( read Chinese/Indian workers ) or American DIY types ( 0 pay levels ;-) tjtr33 tomp On 07/21/16 12:16, Gene Heskett wrote: > On Thursday 21 July 2016 00:00:12 TJoseph Powderl

Re: [Emc-users] EDM with continuous wire?

Jon hello On 07/21/16 21:32, Jon Elson wrote: > On 07/21/2016 12:16 AM, Gene Heskett wrote: >> On Thursday 21 July 2016 00:00:12 TJoseph Powderly wrote: >> >>> Gene >>> once again your post title ran me off as i took it to be correct >>> your post

Re: [Emc-users] Slightly_OT

Hi Dave, I'd suggest bot to top ( dont blow down a chimney, heat rises etc ) just my 2c and i'd suggest looking into heat _exchangers_ passive cooling systems that dont let outside air in nor inside air out fans and heatsink on inside circulate internal air fans and heatsinks on outside

Re: [Emc-users] OT Hand Held CNC

hahaha bring the mountain to muhammad cool! tjtr33 On 07/15/16 08:03, Marshland Engineering wrote: > https://www.youtube.com/watch?v=jxQ_NH4bj9o > > and in this one a guy uses it to cut out an adapter plate to put a new > encoder on an axis motor for his Bridgeport Boss CNC mill, Skip 2 minutes.

Re: [Emc-users] Slightly_OT

Hi Dave I'd say from bottom to top but just my 2c I'd suggest you look into heat exchangers they are passive and do not let outside air in nor inside air out both airs hit a heat sink barrier on the cabinet wall inside air temp is affected by the heatsinks temp but no air passes from inside to

Re: [Emc-users] User Report: Rockhopper output to 11x17 paper

PosteRazor? svg -> bitmap -> poster(multi-page PDF) tomp -- Attend Shape: An AT Tech Expo July 15-16. Meet us at AT Park in San Francisco, CA to explore cutting-edge tech and listen to tech luminaries present their

Re: [Emc-users] Coffecup EDM

hi nicklas some dielectric info http://www.guiacnc.com.br/maquinas-em-geral/eletroerosao-caseira/?action=dlattach;attach=30033 basically the gap distance is goverened by the fluids 'dielectric breakdown strength' a measure of the distance at which a given voltage will allow a 'spark' to jump

Re: [Emc-users] Ubuntu Lucid package server

set your apt tool to KEEP any downloads occasionally dupe the cache you will end up with a local set of debs to install googling 'install downloaded debs' gets you... """ You can *install* it using apt-get *install* package_name . But first move your *deb* file to /var/cache/apt/archives/

Re: [Emc-users] I did hit a lick today

Hi Gene some reports on ATS-667 " What I found is that the polarity of the output is not the same when the unit is powered with a tooth in sensing range as it is when a tooth is not there! " http://www.msextra.com/forums/viewtopic.php?f=131=45528 and suggests a similar product from Honeywell

Re: [Emc-users] Tool offset

is the part moving or the kerf filling with swarf thus affecting the size? tho i cant picture how the part gets larger maybe in some direction and not overall? or some sort of stress relief is ocurring if the above, try glue-stops or tabs else, i dunno (fiddler on the roof said. you want to know

Re: [Emc-users] EDM gap control

Hello Nicklas, On 08/17/16 00:40, Nicklas Karlsson wrote: > I have tried to use voltage to control EDM gap distance but are not sure this > is the correct method. I found a paper there someone suggested gap resistance > is a non linear function of gap distance. the gap resistance is used

[Emc-users] linuxcnc on udoo x86 / udoo x86 ultra was linuxcnc on raspberry pi 3

there are some x86 models, and one, the udoo x86 ultra, has an embedded arduino 101 (maybe a handy slave) there are also arm models but this x86 looks interesting forlinuxcnc the "udoo x86 ultra" tadaaa it came out of kickstarter http://mouser.com/new/udoo/udoo-x86/

Re: [Emc-users] (corrected) AT KL8060 driver

haha scott towel wrong brand tho... https://www.youtube.com/watch?v=4Ubtg3wnvQc tomp tjtr33 On 02/05/17 16:44, Gene Heskett wrote: > On Saturday 04 February 2017 17:09:34 Gene Heskett wrote: > > Driver part number corrected. > >> Greetings all; >> >> Does anyone have any experience with that

Re: [Emc-users] Does anybody know about this interpolated tapping ?

i've not done it with linuxcnc we did it a lot in heidenhain tnc controls for sink edm google thread milling you need a tool with the correct pitch on smaller shank than the drilled hole how the metal is attacked can be: goto to the bottom before interpolating an expanding circle or helix

Re: [Emc-users] Does anybody know about this interpolated tapping ?

very nice idea, bore & thread with 1 tool but i _thought_ "this puts a lot of work on the lead edge, and the circular interpolation avoided that" but then i read that it was meant for non-ferrous materials so no heart attack until i read the price... 62Euro!? well its a lot more than the old

Re: [Emc-users] Need some education

I don't mean to muddy the waters but I saw today some hacks to measure rpm using audacity to find the audible Hz of spindles. Too cool to keep secret. Same trick was used to balance propellers and discriminate which prop on an RC heli was causing vibration. I can imagine a slow non-rt speed

Re: [Emc-users] ECM (Electrochemical Machining)

t Regards, > Peter > > Am 14.01.2017 um 11:58 schrieb Nicklas Karlsson: >> It would be good with links like this on the linuxcnc home page and of >> course even better with files themselves if there are no copyright >> restrictions. >> >> I have attachad a p

Re: [Emc-users] linuxcnc on raspberry pi 3

Abdul hello we do not think the image you talk of is linuxcnc it it different control system that we do not use it is 'grbl' please read the documents on the protroneer websites like here http://wiki.protoneer.co.nz/Raspberry_Pi_CNC_-_Quick_Start_Guide where it states """ * Raspberry Pi systems

Re: [Emc-users] linuxcnc on udoo x86 / udoo x86 ultra was linuxcnc on raspberry pi 3

Thanks Erik my beaglebone, qubie and orangePiPlus2e cant do graphics like the video you posted ( heck my dm510 cant do it either ) All of those were candidates for linuxcnc but are now just bookshelf knickknacks. the video doesnt prove that an rt kernel linuxcnc image would run that well, but

Re: [Emc-users] [OT] Wife is good to go

gene, i dunno if this can help last nite i installed a 'fall detector' on wife's android phone it uses the accelerometers to detect a sudden change, then looks for a period of no motion ( thats how they define a fall to unconcioussness ) then it makes a LOT of noise and calls a given cell phone

Re: [Emc-users] M. P. Jones has deal on manual pulse generator

Gene & missus hope you are well the important things in life are the people we love tomp & raem chiangmai -- Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org!

Re: [Emc-users] EDM Small Hole Drilling

thats hot! 1mm dia. tomp On 02/12/17 04:52, Ken Strauss wrote: > A local shop uses the larger version of these to deburr holes drilled in > tubing. They claim to be usable in 0.040 holes and there is a Swiss company > that I can't recall the name of that makes really small ones. > >

Re: [Emc-users] EDM Small Hole Drilling

, you actually push the remaining stock out! again, its magnitude/scale, so take a sample part to a jockey (aka applications engineer) and see what result you get thats a good feasibility/reality test On 02/12/17 01:27, Jim Craig wrote: > On 2/10/2017 9:01 PM, TJoseph Powderly wr

Re: [Emc-users] EDM Small Hole Drilling

g down and the electrode underneath > facing upward? I would think gravity could then help clear debris out of the > hole. > > -- Ralph > > On Feb 11, 2017 2:35 AM, TJoseph Powderly <tjt...@gmail.com> wrote: > > > On 02/11/17 17:15, Andy Pugh wrote: >>>

Re: [Emc-users] another (possibly silly) EDM question

On 02/14/17 09:04, Ralph Stirling wrote: > For you EDM experts out there: How well would it > work to do sinker EDM with a 3D printed metal part? at first i thought you meant a 3D printed electrode... thats been tried, there are papers but after a couple years have passed, i hear no adoption of

Re: [Emc-users] OT: Need some guidance on high temp/pressure water circuit

use of water vs electrical heaters to _stabilize_ molding temperatures. http://www.ptonline.com/cdn/cms/uploadedFiles/MoldTemperatureControlWhitePaper.pdf tomp On 02/09/17 14:34, Roland Jollivet wrote: > Probably more OT, but is this a very special mould? Or process? > >

Re: [Emc-users] OT: Need some guidance on high temp/pressure water circuit

sanity check:can this really be done? what is the mass to be heated/cooled? what is the hot target? what is the cold target? what is the time desired for heating? what is the time desired for cooling? Rolands comments are good to note. can the mass really be thermally changed as fast as you

Re: [Emc-users] EDM Small Hole Drilling

Jim hello I have worked with a lot of taiwanese hole drills ( hopops for short ) On 02/11/17 04:59, Jim Craig wrote: > I am working on a project at work where we are designing a new CNC > machine for a particular application. Up to this point I have been > planning on using a standard machine

Re: [Emc-users] EDM Small Hole Drilling

re: other technogies... if you can drill it, it'll be faster a good applications engineer from a good company can read your specs and give you tools and tooling that will do the job it may be expensive but its pretty guaranteed and even proven on your test parts tomp On 02/11/17 05:42, Jim Craig

Re: [Emc-users] EDM Small Hole Drilling

i was surprised how much off the shelf stuff exists its not impossible to reverse engineer the connections but a working experience is handy maybe you know an edm service engineer cum hacker? the mechanical stuff ( motors spindles pumps ) are too cheap to mess with diy the guides wont be a diy

Re: [Emc-users] EDM Small Hole Drilling

wow, i gotta look into that epoxy idea, we just pressurized the cavity with water and that was a complex jig already! thx tomp On 02/11/17 05:58, Comcast wrote: > The laser drilling was the first thing I thought of too. Pratt & Whitney > uses this process to drill similar size holes in the

Re: [Emc-users] EDM Small Hole Drilling

On 02/11/17 17:15, Andy Pugh wrote: > >> On 10 Feb 2017, at 22:42, Jim Craig wrote: >> >> Seriously though, lasers are expensive. I actually considered lasers >> first and went back to a regular spindle. > Also, going back to something else mentioned here, ECM might

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